I entered my car in the 3rd round of the streetlegals in Drachten, Holland yesterday.
I had missed out the 1st and 2nd round so was eager to improve on my times from last year. Had high hopes from my 100 bhp nitrous shot.
Wether conditions:
Not ideal, 25 degrees Celsius, high humidity, and a stiff headwind on the track.
Track conditions:
As poor as poor can be. There is always a professional dragevent from the Explosion dragster organisation one week prior to our streetlegals, so in the meantime, rain, dust and oil mix together nicely to ruin the traction.
This time it was so bad that some of the hardcore racers managed to break gearboxes, shafts, etc, which caused several delays.
Only the guys with slicks or drag radials had decent grip.
I always make a couple of in car videos from my runs:
View My VideoMy first run. I had forgotten to uncork my exhaust cutout. Luckily my catback stayed in one piece. Minimax at 30% with a 5 second ramp. Front tyres at 2.5 bar. Lots of wheelspin in 1st and 2nd. I found out I couldn`t flatshift through the first two gears on this track due to excessive torque steer, I had to keep the steering wheel with both hands otherwise I would be all over the place. Wished I had a LSD now.
A disappointing 14.765 E.T. I was shocked.
View My VideoMy third run. I forgot to switch on the camera for the second run. Lowered tyre pressure to 2.2 bar. Minimax 30% at 7 second ramp. Exhaust uncapped. Bottle pressure was rather high at 1050 psi because of the exposure to the sun.
14.639 E.T. with a sleepy 0.554 reaction time.
View My VideoFourth run. I was up against a buddy of mine with his ratty turboed Nova with 400 bhps. Minimax 30% at 6 second ramp. Bottle presure was down to 900 psi. Tried a 80 fuel jet instead of the 90 fuel jet. Engine picked up a bit in the midrange, might be responsible for my best time that evening, a 14.455 E.T. If it wasn`t for my lousy 0.553 reaction time I might have broken into the 13`s with that run.
View My VideoHad a good 0.032 reaction time this run.
Appaling 2.642 60ft
14.760 E.T.
View My Video0.023 reaction time, my best that evening.
2.619 60 ft.
14.737 E.T.
View My VideoBottle starting to get empty. 1000 psi in bottle. Changed back to the original 90 fuel jet. Somehow scored my highest topspeed at 167.83 km/hr.
View My VideoAs a comparison a video from last year when I was naturally aspirated.
14.49 E.T. at 158.9 km/hr.
A few timeslips from yesterday:
This gives and indication of my trapspeed through the lights. Was off against someone in a 550 bhp r33 Skyline. If you solely look at the speed I`m not far behind.
I just need a better launch technique and improved traction to get a better E.T.
I compared my times to that of others and my 167 km/hr topspeed indicated a 13.7 E.T. with better launch and traction, so I know it`s possible for me to break into the 13`s.
My best E.T. that day. My best time last year was a 14.49 E.T. naturally aspirated, so a 0.04 second improvement with an extra 100 bhp nitrous shot on tap is pretty poor in my book.
The 4th and last round of the streetlegals is coming August, and I plan on changing my launch technique with the nitrous radically. I guess I`m still used to a natural style of driving by revving the snot out of the engine and flatshift my way through the gears.
I plan on setting the nitrous activation point very low, 2000 rpm or so, and let the torque from the nitrous carry me through 1st and 2nd gear in hopes of improving my 60 ft time and 100 ft time without the tyres breaking traction, I think this is the area where I`m loosing a considerable amount of time.
Video of my run against some other guy (half of the starting field consists of HondaCivics)
http://www.youtube.com/watch?v=ebC8_UilmZY